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Pascal Triangle Generator

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Jan 10th, 2008

Views: 1,465

darkscript

This program generates lines of pascal's triangle, numbers after 23 generate weird output.

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cplusplus Syntax |

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#include <iostream>
#include <stdlib.h>
 
using namespace std;
 
string Separator("    ");
 
float factorial (float n)
{
	if (n == 0.0f)
		return 1.0f;
	else if (n != 1.0f)
		return n*factorial (n-1.0f);
	else
		return n;
}
float combination (float n,float r)
{
	return factorial(r)/((factorial(r-n)*factorial(n)));
}
 
void printRow(float r)
{
	for (float i=0.0f; i<=r; i+=1.0f){
		cout << combination (i,r) << Separator;
	}
}
 
void printRows(float r)
{
	for (float j=0.0f; j<r; j+=1.0f){
		printRow(j);
		cout << endl;
	}
}
int main(int argc, char** argv)
{
	float nRows = 10.0f;
	cout << "Hello, This is me Pascal. I'll give you ";
	if (argv [1] == 0)
		cout << "10 Lines of my famous triangle";
	else if (atof (argv [1]) <= 0.0f)
		cout << "10 Lines of my famous triangle";
	else {
		nRows = atof(argv [1]);
		cout << argv [1] << (nRows > 1? " Lines " : " Line ") << "of my famous triangle.\n";
	}
	printRows(nRows);
}